[apple/system_cmds.git] / chpass.tproj / edit.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*-
 * Copyright (c) 1990, 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/stat.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <pw_scan.h>
#include <pw_util.h>

#include "chpass.h"

extern char *tempname;

void
edit(pw)
	struct passwd *pw;
{
	struct stat begin, end;

	for (;;) {
		if (stat(tempname, &begin))
			pw_error(tempname, 1, 1);
		pw_edit(1);
		if (stat(tempname, &end))
			pw_error(tempname, 1, 1);
		if (begin.st_mtime == end.st_mtime) {
			warnx("no changes made");
			pw_error(NULL, 0, 0);
		}
		if (verify(pw))
			break;
		pw_prompt();
	}
}

/*
 * display --
 *	print out the file for the user to edit; strange side-effect:
 *	set conditional flag if the user gets to edit the shell.
 */
void
display(fd, pw)
	int fd;
	struct passwd *pw;
{
	FILE *fp;
	char *bp, *p, *ttoa();

	if (!(fp = fdopen(fd, "w")))
		pw_error(tempname, 1, 1);

	(void)fprintf(fp,
	    "#Changing user database information for %s.\n", pw->pw_name);
	if (!uid) {
		(void)fprintf(fp, "Login: %s\n", pw->pw_name);
		(void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
		(void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid);
		(void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid);
		(void)fprintf(fp, "Change [month day year]: %s\n",
		    ttoa(pw->pw_change));
		(void)fprintf(fp, "Expire [month day year]: %s\n",
		    ttoa(pw->pw_expire));
		(void)fprintf(fp, "Class: %s\n", pw->pw_class);
		(void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
		(void)fprintf(fp, "Shell: %s\n",
		    *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
	}
	/* Only admin can change "restricted" shells. */
	else if (ok_shell(pw->pw_shell))
		/*
		 * Make shell a restricted field.  Ugly with a
		 * necklace, but there's not much else to do.
		 */
		(void)fprintf(fp, "Shell: %s\n",
		    *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
	else
		list[E_SHELL].restricted = 1;
	bp = pw->pw_gecos;
	p = strsep(&bp, ",");
	(void)fprintf(fp, "Full Name: %s\n", p ? p : "");
	p = strsep(&bp, ",");
	(void)fprintf(fp, "Location: %s\n", p ? p : "");
	p = strsep(&bp, ",");
	(void)fprintf(fp, "Office Phone: %s\n", p ? p : "");
	p = strsep(&bp, ",");
	(void)fprintf(fp, "Home Phone: %s\n", p ? p : "");

	(void)fchown(fd, getuid(), getgid());
	(void)fclose(fp);
}

int
verify(pw)
	struct passwd *pw;
{
	ENTRY *ep;
	char *p;
	struct stat sb;
	FILE *fp;
	int len;
	char buf[LINE_MAX];

	if (!(fp = fopen(tempname, "r")))
		pw_error(tempname, 1, 1);
	if (fstat(fileno(fp), &sb))
		pw_error(tempname, 1, 1);
	if (sb.st_size == 0) {
		warnx("corrupted temporary file");
		goto bad;
	}
	while (fgets(buf, sizeof(buf), fp)) {
		if (!buf[0] || buf[0] == '#')
			continue;
		if (!(p = strchr(buf, '\n'))) {
			warnx("line too long");
			goto bad;
		}
		*p = '\0';
		for (ep = list;; ++ep) {
			if (!ep->prompt) {
				warnx("unrecognized field");
				goto bad;
			}
			if (!strncasecmp(buf, ep->prompt, ep->len)) {
				if (ep->restricted && uid) {
					warnx(
					    "you may not change the %s field",
						ep->prompt);
					goto bad;
				}
				if (!(p = strchr(buf, ':'))) {
					warnx("line corrupted");
					goto bad;
				}
				while (isspace(*++p));
				if (ep->except && strpbrk(p, ep->except)) {
					warnx(
				   "illegal character in the \"%s\" field",
					    ep->prompt);
					goto bad;
				}
				if ((ep->func)(p, pw, ep)) {
bad:					(void)fclose(fp);
					return (0);
				}
				break;
			}
		}
	}
	(void)fclose(fp);

	/* Build the gecos field. */
	len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) +
	    strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4;
	if (!(p = malloc(len)))
		err(1, NULL);
	(void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s", list[E_NAME].save,
	    list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save);

	if (snprintf(buf, sizeof(buf),
	    "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s",
	    pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class,
	    pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir,
	    pw->pw_shell) >= sizeof(buf)) {
		warnx("entries too long");
		return (0);
	}
	return (pw_scan(buf, pw));
}
Commit	Line	Data
1815bff5 A	1	/*
	2	* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
	7	* Reserved. This file contains Original Code and/or Modifications of
	8	* Original Code as defined in and that are subject to the Apple Public
	9	* Source License Version 1.0 (the 'License'). You may not use this file
	10	* except in compliance with the License. Please obtain a copy of the
	11	* License at http://www.apple.com/publicsource and read it before using
	12	* this file.
	13	*
	14	* The Original Code and all software distributed under the License are
	15	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	19	* License for the specific language governing rights and limitations
	20	* under the License."
	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
	24	/*-
	25	* Copyright (c) 1990, 1993, 1994
	26	* The Regents of the University of California. All rights reserved.
	27	*
	28	* Redistribution and use in source and binary forms, with or without
	29	* modification, are permitted provided that the following conditions
	30	* are met:
	31	* 1. Redistributions of source code must retain the above copyright
	32	* notice, this list of conditions and the following disclaimer.
	33	* 2. Redistributions in binary form must reproduce the above copyright
	34	* notice, this list of conditions and the following disclaimer in the
	35	* documentation and/or other materials provided with the distribution.
	36	* 3. All advertising materials mentioning features or use of this software
	37	* must display the following acknowledgement:
	38	* This product includes software developed by the University of
	39	* California, Berkeley and its contributors.
	40	* 4. Neither the name of the University nor the names of its contributors
	41	* may be used to endorse or promote products derived from this software
	42	* without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*/
	56
	57	#include <sys/param.h>
	58	#include <sys/stat.h>
	59
	60	#include <ctype.h>
	61	#include <err.h>
	62	#include <errno.h>
	63	#include <paths.h>
	64	#include <pwd.h>
65	#include <stdio.h>
66	#include <stdlib.h>
67	#include <string.h>
68	#include <unistd.h>
69
70	#include <pw_scan.h>
71	#include <pw_util.h>
72
73	#include "chpass.h"
74
75	extern char *tempname;
76
77	void
78	edit(pw)
79	struct passwd *pw;
80	{
81	struct stat begin, end;
82
83	for (;;) {
84	if (stat(tempname, &begin))
85	pw_error(tempname, 1, 1);
86	pw_edit(1);
87	if (stat(tempname, &end))
88	pw_error(tempname, 1, 1);
89	if (begin.st_mtime == end.st_mtime) {
90	warnx("no changes made");
91	pw_error(NULL, 0, 0);
92	}
93	if (verify(pw))
94	break;
95	pw_prompt();
96	}
97	}
98
99	/*
100	* display --
101	* print out the file for the user to edit; strange side-effect:
102	* set conditional flag if the user gets to edit the shell.
103	*/
104	void
105	display(fd, pw)
106	int fd;
107	struct passwd *pw;
108	{
109	FILE *fp;
110	char bp, p, *ttoa();
111
112	if (!(fp = fdopen(fd, "w")))
113	pw_error(tempname, 1, 1);
114
115	(void)fprintf(fp,
116	"#Changing user database information for %s.\n", pw->pw_name);
117	if (!uid) {
118	(void)fprintf(fp, "Login: %s\n", pw->pw_name);
119	(void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
120	(void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid);
121	(void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid);
122	(void)fprintf(fp, "Change [month day year]: %s\n",
123	ttoa(pw->pw_change));
124	(void)fprintf(fp, "Expire [month day year]: %s\n",
125	ttoa(pw->pw_expire));
126	(void)fprintf(fp, "Class: %s\n", pw->pw_class);
127	(void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
128	(void)fprintf(fp, "Shell: %s\n",
129	*pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
130	}
131	/* Only admin can change "restricted" shells. */
132	else if (ok_shell(pw->pw_shell))
133	/*
134	* Make shell a restricted field. Ugly with a
135	* necklace, but there's not much else to do.
136	*/
137	(void)fprintf(fp, "Shell: %s\n",
138	*pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
139	else
140	list[E_SHELL].restricted = 1;
141	bp = pw->pw_gecos;
142	p = strsep(&bp, ",");
143	(void)fprintf(fp, "Full Name: %s\n", p ? p : "");
144	p = strsep(&bp, ",");
145	(void)fprintf(fp, "Location: %s\n", p ? p : "");
146	p = strsep(&bp, ",");
147	(void)fprintf(fp, "Office Phone: %s\n", p ? p : "");
148	p = strsep(&bp, ",");
149	(void)fprintf(fp, "Home Phone: %s\n", p ? p : "");
150
151	(void)fchown(fd, getuid(), getgid());
152	(void)fclose(fp);
153	}
154
155	int
156	verify(pw)
157	struct passwd *pw;
158	{
159	ENTRY *ep;
160	char *p;
161	struct stat sb;
162	FILE *fp;
163	int len;
164	char buf[LINE_MAX];
165
166	if (!(fp = fopen(tempname, "r")))
167	pw_error(tempname, 1, 1);
168	if (fstat(fileno(fp), &sb))
169	pw_error(tempname, 1, 1);
170	if (sb.st_size == 0) {
171	warnx("corrupted temporary file");
172	goto bad;
173	}
174	while (fgets(buf, sizeof(buf), fp)) {
175	if (!buf[0] \|\| buf[0] == '#')
176	continue;
177	if (!(p = strchr(buf, '\n'))) {
178	warnx("line too long");
179	goto bad;
180	}
181	*p = '\0';
182	for (ep = list;; ++ep) {
183	if (!ep->prompt) {
184	warnx("unrecognized field");
185	goto bad;
186	}
187	if (!strncasecmp(buf, ep->prompt, ep->len)) {
188	if (ep->restricted && uid) {
189	warnx(
190	"you may not change the %s field",
191	ep->prompt);
192	goto bad;
193	}
194	if (!(p = strchr(buf, ':'))) {
195	warnx("line corrupted");
196	goto bad;
197	}
198	while (isspace(*++p));
199	if (ep->except && strpbrk(p, ep->except)) {
200	warnx(
201	"illegal character in the \"%s\" field",
202	ep->prompt);
203	goto bad;
204	}
205	if ((ep->func)(p, pw, ep)) {
206	bad: (void)fclose(fp);
207	return (0);
208	}
209	break;
210	}
211	}
212	}
213	(void)fclose(fp);
214
215	/* Build the gecos field. */
216	len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) +
217	strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4;
218	if (!(p = malloc(len)))
219	err(1, NULL);
220	(void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s", list[E_NAME].save,
221	list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save);
222
223	if (snprintf(buf, sizeof(buf),
224	"%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s",
225	pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class,
226	pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir,
227	pw->pw_shell) >= sizeof(buf)) {
228	warnx("entries too long");
229	return (0);
230	}
231	return (pw_scan(buf, pw));
232	}